Hello.
When we want to use "Subcarrier reset mode(0x44[2:1]=01b)" on ADV7320, my understanding for using it are below.
-Set register 0x44[2:1] to 01b
-Apply reset signal to RTC_SCR_TR pin in Field 7 (PAL) or Field 3 (NTSC)
There is no problem in NTSC case, but in PAL case it can not lock to subcarrier in rare cases.
So, what should we do to get the stable SC-lock?
==additional information==
To set register 0x7C to 1 makes it work well even PAL case.
But in that case we can see the noise on first line in field 1 unfortunately.
Your help would be most appreciated.
Best regards.
Kikka